mediate

Negotiators managed to mediate a ceasefire.

"Nay," replied Charles, gravely, "this is carrying your anger too far. Allow me to mediate between you. I must entreat, nay, I command, the Lady Francesca's presence."

Space from the elevation of one Foot, to the same Foot set down again, mediated by a step of the other Foot a Pace […]

[A]s much as language in our modern technological world is mediated through the written word, quantitatively spoken language still reigns supreme.